CATALOGUE. 277 



obtuse margins and nearly entire beak, appear to distinguish it from divisa, 

 which has a bidentate, many-striate perigynium, wing-margined above. 



Cakex marcida, Boott. — Twin Lakes (1012) ; Santa Fe, N. Mex. 



Carex vulpinoidea, Mx. — Tanks 28 miles south of Camp Apache, 

 Arizona (267) 



Carex mukicata, L. — Santa F6, N. Mex. (46, is a very small form). 

 Var. gracilis, Boott (C. Hooker iana, Dew.), South Park, Colorado (1006). 



Carex stenopiiylla, Wahl. — South Park (1012). 



Carex tenella, Schk. — Twin Lakes (1016). 



Carex canescens, L. — Twin Lakes (1017) (1018 possibly C. canescens, 

 Blytt). 



Carex echinata, Murray (C. stellulata, Good.) (1018 in part). — Twin 

 Lakes; also (214) from Willow Spring, Arizona, at 7,400 feet. 



Cakex Liddoni, Boott. — Colorado (1030 and 1031) ; Mount Graham, 

 Arizona, at 9,000 feet elevation (427). Dr. Boott founded this species 

 on specimens brought from the Columbia River by Dr. Scouler, and 

 noticed its affinity to C. arida. It has since been found to have a wide 

 range at the West, and to be very variable, approaching C. leporina, L. 



Carex leporina, L.— Colorado, Wolf (1024, 1025). 



Carex festiva, Dew. — Mosquito, Colorado (1020); Mount Graham, 

 Arizona, at 9,0.0 feet (430). 



Carex adusta, Boott— Colorado, Wolf (1028, 1029). 



Carex rigida, Good. (C. vulgaris, Fries, var. alpina, Boott.) — Chiri- 

 cahua Creek, Arizona; also Mosquito, Colorado (1035, 1036), Wolf. 



Carlx vulgaris, Fries. — Twin Lakes, Colorado (1039.) 



Carex aquatilis, Wahl — South Park (1034). Var., Twin Lakes 

 (1037, 1038, Wolf), 18' high, very slender, with 1-2 male and 1-2 linear- 

 clavate, loosely flowered, exsertly pedunculate female spikes; bracts shorter 

 than the culm ; perigynia (very young) obovate, nerveless, abruptly ter- 

 minated by an extremely short, entire beak, broader and shorter than the 

 lanceolate purple scales which have a pale midrib. 



Carex Jamesii, Torr. — Denver, Colorado (1032); Willow Spring, Ari- 

 zona, at 7,195 feet (216). (No. 245, from Willow Spring, resembles C. 

 acuta, L., but the bracts are shorter ami the perigynia bidentate.) 



